OWINGS MILLS, Md. — After winning their second consecutive AFC North division title with a 10-6 record and winning a postseason game for the fifth straight season, the Ravens could easily be described as a group that’s overachieved when taking into account the extensive list of injuries sustained.

Among those are two players whose combined salary cap number accounts for $21.9 million of the $120.6 million limit for the 2012 season. As decorated as anyone on the roster with a combined nine Pro Bowl selections, linebacker Terrell Suggs and defensive tackle Haloti Ngata are supposed to be the Ravens’ best defensive players. Instead, they’ve made little impact this season as the Baltimore defense slipped to 17th in yards allowed and tied for 12th in points per game.

Injuries have told the story for both players as Suggs returned in October from an offseason Achilles tendon surgery that most assumed would end his season. As remarkable as the recovery has been, many predicted Suggs would not regain his explosiveness this season, which has appeared to be the case as the 30-year-old was held to just two sacks and 22 tackles in eight games played. Not helping matters was an additional injury as Suggs suffered a torn right biceps on Dec. 2, which forced him to miss another game and has limited his ability to tackle and even fire out of a three-point stance as he tries to keep weight off the injured arm.

“I am marveled the guy has played at all this year,” Pees said. “I think anything that we’ve gotten out of Terrell Suggs has been a positive. I don’t look at it at all like he hasn’t done something successfully. I look at it as this has been a bonus that we ever had the guy. I never dreamed that we’d ever have the guy at all this year.”

Of course, Suggs’ mere presence forces opponents to identify him and takes attention away from others such as linebacker Paul Kruger, but his production hasn’t matched the $11.5 million cap figure he carries. This accounts for nearly 10 percent of the entire salary cap this year.

Also taking up a huge portion of the cap with a $10.4 million number, Ngata suffered a sprained MCL on Oct. 14 and hasn’t been effective for much of the season. Missing two games — one of them coming in the regular-season finale when the Ravens rested numerous starters — Ngata finished with his lowest tackle total (51) since 2009 and five sacks, but the 28-year-old failed to provide consistent pressure or control the line of scrimmage on a consistent basis.

Regarded as one of the biggest forces in the NFL, Ngata’s presence has gone unnoticed for large portions of the season as he’s lacked the same speed and power he enjoyed prior to a thigh injury midway through the 2011 season. Ngata signed a five-year, $61 million contract early last season, which included $40 million to be paid in the first two years of the deal.

It’s fair to say physical issues have prevented him from living up to that contract so far despite Ngata being named to the Pro Bowl in each of the last two seasons.

“Haloti has been hurt all year, and the fact that we’ve gotten a lot out of him – we’ve tried to rest him a couple of times, tried to take some reps off of him – the guy never says a word,” Pees said. “He just comes out and plays, does what he’s supposed to do, and it’s a credit to him. I think he probably, production-wise, hasn’t had the year that he has had in some other years, but he really has been hurt.”

The Ravens hope the rest awarded to both players in Week 17 will pay dividends as they travel to Denver to take on the red-hot Broncos, who finished fourth in total offense (397.9 yards per game) and second in points scored (30.1 per contest).

In the 24-9 win over Indianapolis, Ngata finished with four tackles and knocked down a pass while Suggs had two tackles and two quarterback hits. The two will need to bring a bigger presence to Denver in order to slow quarterback Peyton Manning. In the teams’ first meeting, the duo combined for two tackles and no sacks.

Pees has seen improvement in Ngata in recent weeks after acknowledging how banged up the defensive tackle was during the middle portion of the season. The seventh-year lineman did not play in the Ravens’ 55-20 win over Oakland on Nov. 11.

“I think taking some of the reps off of him with DeAngelo Tyson and Art Jones and some of those guys getting some playing experience, whether we wanted him to or whether we didn’t want him to, in the long run, I think it was a good thing,” Pees said. “We got to take some plays off of him, which has been a little bit better here towards late in the season.”